NATURAL TRIPLOIDY IN ASTYANAX-SCABRIPINNIS (PISCES, CHARACIDAE) AND SIMULTANEOUS OCCURRENCE OF MACRO B-CHROMOSOMES
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/07/1994
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Resumo |
The occurrence of natural triploidy in two specimens of Astyanax scabripinnis collected in the Araqua river and in the Corrego das Pedras stream, respectively, is noticed. The triploid specimen from the Araqua river presented one macro B-chromosome and the triploid specimen from Corrego das Pedras stream presented two macro B-chromosomes. The C-banding performed in the specimen from the Araqua river confirmed the triploidy and showed that the macro B-chromosome was entirely heterochromatic. Ag-NOR characterization showed two chromosomes involved in the nucleolar activity in both specimens. Some aspects related to the origin of triploid fishes are described. |
Formato |
233-239 |
Identificador |
http://www.caryologia.unifi.it/ Caryologia. Florence: Univ Florence Botany Inst, v. 47, n. 3-4, p. 233-239, 1994. 0008-7114 http://hdl.handle.net/11449/32201 WOS:A1994QX43200005 |
Idioma(s) |
eng |
Publicador |
Univ Florence Botany Inst |
Relação |
Caryologia |
Direitos |
closedAccess |
Palavras-Chave | #FISH CYTOGENETICS #ASTYANAX-SCABRIPINNIS #NATURAL TRIPLOIDY #B-CHROMOSOMES #C-BANDING |
Tipo |
info:eu-repo/semantics/article |